Each Setting And Adjustment; Idle Current Adjustment - Pioneer SX-319V-K Service Manual

5

8. EACH SETTING AND ADJUSTMENT

8.1 IDLE CURRENT ADJUSTMENT

1. Idle Current Adjustment
Measurement Points
TP201FL 3PIN : TEST POINT(+)
TP201FL 1PIN : TEST POINT(-)
TP201FR 3PIN : TEST POINT(+)
TP201FR 1PIN : TEST POINT(-)
TP201C 3PIN : TEST POINT(+)
TP201C 1PIN : TEST POINT(-)
TP201SL 3PIN : TEST POINT(+)
TP201SL 1PIN : TEST POINT(-)
TP201SR 3PIN : TEST POINT(+)
TP201SR 1PIN : TEST POINT(-)
TP201SW 3PIN : TEST POINT(+)
TP201SW 1PIN : TEST POINT(-)
• Adjustment Point and Measurement Points.... see fig1.
J
P.C.B SUB ASSY (AMP)
TP201FR 1PIN TP201SR 1PIN
TEST POINT(-) TEST POINT(-)
Idle current Idle current
VR: VR201FR VR: VR201SR
TP201FR 3PIN
TEST POINT(+)
5
6
Adjustment
Points
VR201FL
VR201FR
VR201C
VR201SL
VR201SR
VR201SW
TP201SR 3PIN TP201C 3PIN
TEST POINT(+) TEST POINT(+)
Idle current Idle current
VR: VR201C VR: VR201SW
TP201C 1PIN
TEST POINT(-)
[fig 1.]
SX-319V-K
6
7
Procedure
1 Turn on the power.
2 Perform aging for one minute.
3 Connect a digital voltmeter to the measurement point.
4 Turn the adjustment VR so that the voltage becomes
in 2.0 mV ± 0.2 mV.
(Condition : No signal and no load)
TP201SW 1PIN TP201SL 1PIN
TEST POINT(-) TEST POINT(-)
Idle current
VR: VR201SL
TP201SW 3PIN TP201SL 3PIN
TEST POINT(+) TEST POINT(+)
7
8
SIDE A
TP201FL 3PIN
TEST POINT(+)
Idle current
VR: VR201FL
TP201FL 1PIN
TEST POINT(-)
43
8
A
B
C
D
E
F